Answer: 4n - 7 = 21, n = 7
Explanation:
A difference indicates subtraction of two terms. Four times a number indicates that a number of any value has to be multiplied by 4.
Hence, the equation that is represented by the question is
We can also solve this equation (i.e., find the value of x that makes this equation true).
Adding 7 to both sides, we get
Since the -7 and 7 add to 0, the equation becomes
To get x by itself, we can divide both sides by 4, making the equation
Hence, x must be 7 to make the equation true, or 7 is a solution to the equation.